This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Hydrogen Sulfide Formation Over Automotive Oxidation Catalysts
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1975 by SAE International in United States
Annotation ability available
A number of laboratory and engine dynamometer studies were conducted to determine the effect of various catalyst and engine operating parameters on the formation of H2S over alumina-supported Pt and Pd catalysts.
These experiments indicate that H2S formation occurs at high temperatures under O2 deficient conditions. The fraction of exhaust gas SO2 converted to H2S was relatively constant for various fuel sulfur levels, and thus H2S formation decreases as fuel sulfur content decreases. Calculation of thermodynamic equilibria, as well as various experimental results, indicate that H2S formation is kinetically limited under the experimental conditions investigated.
Since the operating conditions that favor H2S formation (high catalyst temperature and O2 deficiency) do not normally occur in current oxidation catalytic emission control system operation, the formation of H2S over automotive oxidation catalysts is unlikely unless engine or system malfunctions occur.
CitationBarnes, G. and Summers, J., "Hydrogen Sulfide Formation Over Automotive Oxidation Catalysts," SAE Technical Paper 750093, 1975, https://doi.org/10.4271/750093.
- Beltzer M. Campion R.J. Petersen W.L. “Measurement of Vehicle Particulate Emissions.” Paper 740286 SAE Automotive Engineering Congress Detroit February 1974
- Pierson W.R. Hammerle R.H. Kummer J.T. “Sulfuric Acid Aerosol Emissions from Catalyst-Equipped Engines.” Paper 740287 SAE Automotive Engineering Congress Detroit February 1974
- Begeman C.R. Jackson M.W. Nebel G.J. “Sulfate Emissions from Catalyst-Equipped Automobiles.” Paper 741060 SAE Automobile Engineering Meeting Toronto, Canada October 1974
- Barnes G.J. Klimisch R.L. Krieger B.B. “Equilibrium Considerations in Catalytic Emission Control.” Paper 730200 SAE Automotive Engineering Congress Detroit January 1973
- West P.W. Gaeke G.C. “Analytical Chemistry.” 28 1816 1956
- Gustafsson L. “Talanta.” 4 227 1960 4 236 1960
- D'Alleva B.A. “Procedure and Charts for Estimating Exhaust Gas Quantities and Compositions.” GM Research Laboratories Report 372 1960
- Hunter J.E. “Studies of Catalyst Degradation in Automotive Emission Systems.” Paper 720122 SAE Automotive Engineering Congress Detroit January 1972